Dowel-cutting machine.



M. BROGHU & M. C. 6a A. L. H. VBRWYS.

POWEL CUTTING MGHINE. f nrLIpL'rIoi FILED Nov. 5,1910.

- Patented May 23, 1911.

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' MICHAEL BnocHU, MART Toall 'Inkom iimay Dowel-Cu-ttin' owel rods to predetermined lengthskandi pointing the same Iand for other 'analogous purposes, and its object @is to provide the of the `grippe'rsa base ofthe machine connected totlfe manl op osito sides of the mandrel and intermedij of Kent and State of Michi an, have invent- .hereinafter more fullly j larly pointed out in t e claims, reference beg had t0 'the accompanying drawings, in which:

having mounted thereon feeding dogs 7 ex-V COMM# 1 l lBe it known that we, MICHAEL B12001111,-l MAn'rIN C. VERwYs, and ADRIAN L. AH. VpnwYs, citizens of lthe UnitedStates of {America, residing atGrand Rapids, in4 the county ed certain new and useful mpr-oyements I in iMachines; and we do hereby' declare the fo lowin to be a full, clear, Vand exact. description o the invention, such as will Aenable others 4 skilled in ythe art ,to vwhich it appertains to "make and use the same. j

Ou'r invention relates -to improvements indowel cutting machines, and its object is to rovide an automatic device, for cuttingr same with various new and useful features described and parti- Figure l is a front elevation of'amachine' embodying our 'invention with portions broken away; Fig. 2 an end eleva-tion of the same; Fig.. 3 an end elevation opposite to Fig. 2 with a portion broken away; Fig. `4f. a vertical seetionof the upperV art of the machine on an enlarged scale; Flg. 5 a plan in elevation; and Fig, 7 an enlarged, detail djacent the cutters. Llke numbers refer to ,like parts inall of thegu'rs. n

1 represents a tubular mandrel.

2 1s the drivingshaft journaled in the drel 1 by pulleys 3 and Airland a -belt 5 whereby lie mandrel is rotated at a moderate 5P'ee -A I Y 6 is a sleeve slidable on the mandrel and tending throu h opposing slots 1n the man'- i drel to near tle axis thereof, and thence at atey pivoted thereon 'also provided' with springs 7 to yieldingly force the inner ends of these dogs toward the axis of the 1' y n In evEBwrs, rANn imma, mcHIGAmfAssIeNoasor ONE- oma-HALF To sAIn AnarAn'fn n. vEnwu/s.

.Speo'iiloation o'fIietters Patent Patfed Application led'N-ovemher 5,1910. Seria1 No. `I9'Q,.89B.j l

, mandrel to.

catedr4 on the J which. is adj to operate the connecting rod 11.` By shiftn gardless loftheir len the mandrel) 'moving backward;

yable in the mandrel to a yof the stroke of the latter,

ofthe rod'll'the grippers.

n ADRIAN n. vEavvYs, crown HALF To SAID .MARTIN e. vEaw-xs `Arm Mei es, '1911.

securely grip and move `the rod p by vst ep as the sleeve is reciprol ',nmndrel.;4 To move' the sleeve on the mandrel, itis provided with a ring 10 rotative thereony and engaged by 'fa lever 9 55 pivoted to the frame at "one end and reci Aro- `v .cated-or oscillatedV by a vconxiectingfro 1I- forward-iste adjustable for length, ybeing made inV two' yoverla ppin'gparts'and adjusted by means of a slot 12in one part anda thumbA screw 13--60 connecting theparts ,of the rod to each other and` adjustable in theslot.

14 is a ,cranlrwheel to operate the connect-A ing rodhaving a transverse `T-slot 15 in ustably-mounted a crank pin16 65 this pin 16toward or'away from 'the axis 0 the wheel, thel'ength of stroke ofthe s1eeve6 'pand consequent len th of the dowel-pin is detei-mined, and. by s 'fting the -len hof the .70 connecting rod, the feeding dogs can,rev

th of stroke,- be made close tot e holding dogs Sarose to' the end of the mandrel to ieces ofrod and extending intov to gripand hold the rod fromi to run u ryan ed holy-short To' adapt themandrel to different sizes of rods, interchangeable bushings 1 are rovided and the mner end of these bushings are each provided. with yieldable grppers 24 positively engaging the rod to pre'vent backwardwmovement of the same when the feeding dogs move backward ron the rod.` These bushings are longitudinally adjustjust these .grip rs Y grippe'rs; 7 regardleess thusby'adjustv ing the stroke of ythelgri'ppers 7 the length of doWel is adjusted, by adjustin the length' 9g)A 'iwi-1 strike up'l close to the grippers 8 and-by adjusting the bushing the grippers 7 will strike back close to theA grippers 2lithus adapting the feed A for long or' short dowels.

To point the ends of the dowels and to cut the same oif from, the rod, I provide a rotary cutter 29 and a saw 30 arran d o posite each other at the respective si es o "the rod and close to the end of the mandrel. 100

to `come close t thel The neef 429 'hasfafvfsh which forms a V-groove cutter'toward the work.

y onthe yoke, said belt being driven by. a

a ed cutting ed in e rod, thus suigt ably o intingthe saine, and the'saw severs the owel from the end cutter 29'and sawBO are respectivelymounted on arbors .31 and in bearings adjustabl'y. 'mounted on the-yoke to ad'ust'the saw and .'Ilhese pulleys' are engaged by a driving belt'36 extending over the same and beneath an idler 35 mounted ulley 37 mounted on the driving shaft 2. VTo engage the fcutter 29 and saw 304 alternately and atv proper time with -the dowel rod, the yoke 1s pivoted von the frame to oscillate and alternately engage the cutter and saw with the work and provided with a suitable groove in a cam wheel 41 moui'ite on a counter shaft 17 journaled-in the frame,

4 This groove holds the yokein mid-position during about one half of there'volutionand oscillates the yoke to rstengage the cutter and then to engage remainder of the revolution of the cam wheel. This counter shaft is driven by bevel gears 21 on a jack shaft 20'L driven by a sprocket. wheel 20 engaged bya chain A19, saidchain being driven by a wheel 20 from 2A connecting it with the driving s aft 2.

On the `jack shaft 2 0 is .another sprocket by. a chain 22 to the shaft carrying the crank Wheel 20b from which motion is imparted wheel14 and having a sprocket` wheel engaged by' said-chain. The wheels 20b and 23 are of the same size, whereby '.Wheels41 and 14 rotate synchronously, and

the cam groove in the wheel 41 is so adjusted that the yoke stands in mid-position 'with .the cutter and saw out of operative position during that part of the revolution -mand'rel 1 by an of tliewheel14, which causes the sleeve -6 to move forward and feed the rod forward in the machine.

Toreceive the dowel after has-been cut fromthe rod and carry .it outside the machine,` and to steady the end of the rod while being cut aA tube 27 is held in line with the arm 28 attached to the frame of the machine and the end of the mandrel and that of the tube 27 adjacent to the cutting toolsare provided with removf able and interchangeable bushings 25 and 26 of diierent openings t'o ada t lthe same to properly engage and holdrox of different sizes.

Obviously ,this machine various other products. 'omitting the saw, rods -can be beaded or otherwise'sha ed at intervalsl fa suitable cutter. So a so by changin e lcutter to form a knob, a handle, a spoo or other analmaybe used. for

of .the rod. This.

32 driven by pulleys 33' and 34 -and journaled a rigid arm 39 havingv a stud: 40fengagin the saw during 1 the 4 a jack'shaft 18.l roperated'by worm. caring.v

the crank 'and dowels For instance, by

,` beingobvious,

able for Y length 4means for reciprocating the sleeve.

grippers near the end o yoke", tu

on the yoke,

ogous articles and-using the saw to cut the same from a continuous rod, various such articles v,can be made.

`need no further illustration. We, therefore, do not desiretobe limited to making dowel pins only, but use the dowel tion of its operation.

What we claim is 1. A dowel cutting-"machine, comprising a tubular mandrel having .longitudinal slots,

slidable dn the mandrel, spring actiiated gri pers mounted onthe sleeve and slidable in tllie slots, holding grippers in the mandrel,

`means for reciprocating the sleeve'adjustof strokeand also adapted to adjust the feeding grippers longitudinally of the mandrel, a pivoted yoke, a cutter and a saw lmounted onthe respective arms of the yoke, a rigid arm on the yoke, ay cam wheel to oscillate the arm, and means for rotating the camA wheel. l

' `2. A dowelcutting machine, comprising a hollow mandrel having opposing slots, a sleeve slidable on the mandrel, spring actupro j ectin connecte dially adjustable through the slots, a pivoted lever crank pin on the wheel, a

rod connecting the pin and the lever and means for adjustin the length of the rod.

3.. A dowel cutting machine, comprising Such modifications v Y pin` arrangement of the machine for illustra "means forrotating the mandrel, va sleeve ated grippers mounted on the sleeve and to the sleeve, a crank wheel,.a raa hollow. mandrel, a sleeve slidable on the mandrel, feeding grippers mounted on the sleeve-andV reciprocating within the mandrel, stationary holding grippers in the in andrelinfront of the fee ing grippers, holding i pers in the mandrel at therear of the ee ing grippers, an ad'ustable bushing in the mandrel carrying the pers, means for rotating the mandrel, 'and 4. A dowel cutter, comprising mandrel,y a removable and adjustable bush- 'ing therein, V,spring Vgrippers onthe end of feeding grippers the bushin to hold a ro reciprocab e in the mandrel, means for reciprocatingthe feedin' grippers', holding the mandrel, and a einovable bushing in the end of the man re f 5.1 A dowel cutter,.comprising a pi'voted yoke, arbors mounted on the arms of the pulley on each arbor, mounte on the yoke near the pivot thereof, a driving pulley below the yokea' rigid arm a cam wheel to oscillate the arm, and :a lielt engaging'- all of the pulleys.

f6. A dowel cutter,

mandrel, a sleeve slidable on the mandrel, feeding grippers on thesleeve and movable in the slots, stationary grippers at oneside y of the feeding grippers and' near the end of ast named gripan idlerl pulley comprising a slotteda tubular y `drel at the other side of the feedplgtures in presence of two witnesses.

the mandrel, a-dj'vitable 4grippers in the m'uan- I'testimony Vwl-lereozf we-ax our` sigla'- pers, a rotative-wheel halving .aradl MICHAEL BROCHU. )ustable crank pin, azrod journaled on the V 4 MARTIN C. VERWYS. pin at me end and conneeted to the sleeve ADRIAN L. ILVERWYS. at the ether eed to reci recate lthe'isame, Witnesses:, means for adjusting the ength of the rod, LUTHER V. MoULToN,

and means for rotating the sleeve and wheelj.- f PALMER A. 'JoNEs. 

